On an ordinary day, ordinary high school student Xiaojun (Kenta Suga), Mika (Hoshika Furuhata), and Xiaowu (Riku Ozeki) were forced by the domineering Takuro (Masaru Jinnai) to come to a long-abandoned small building. At the door, they met Xiaohong (Seiya), a classmate who likes to study insects. Just as Takuro asked Xiaohong why he appeared here, the door of the small building suddenly opened. Puzzled Takuro and Mika walked into the house, and what happened prompted Xiaojun and others to follow in. In the gloomy small building, Xiaojun met another classmate Anna Horikawa (Anna Iriyama) who appeared here earlier. The six people trapped in the house who could not escape wandered around, and there seemed to be something terrible wandering in the empty house. They became the target of hunting by unknown monsters... This film is adapted from the game of the same name.